US3929207A

US3929207A - Ventilated acoustical cover

Info

Publication number: US3929207A
Application number: US559327A
Authority: US
Inventors: Raymond W Urban
Original assignee: Transco Inc
Current assignee: Transco Inc
Priority date: 1975-03-17
Filing date: 1975-03-17
Publication date: 1975-12-30
Anticipated expiration: 1992-12-30
Also published as: CA996035A

Abstract

A cover structure for apparatuses that generate noise, such as vibrators, with the cover consisting of an open bottom, foursided, metallic structure having a deflected air flow discharge chute along an elevated edge formed in part by a removable top and side wall member, with the cover being fully insulated against noise and providing adjustable leg members for attachment to various supports.

Description

FIPSilG United States Patent 1 1 Urban Dec. 30, 1975 VENTILATED ACOUSTICAL COVER 3,799,703 3/1974 Paine et al. 181/33 K X 75 In t R d W. vein or aymon Urban, Ch1cago, lll Primary Examiner L. T. Hlx [73] Assignee: Transco Inc., Chicago, Ill. Assistant Examiner-John F. Gonzales [22] Filed. Mar 17 1975 Attorney, Agent, or Firm-Edward C. Threedy 21 Appl. No.: 559,327 57 ABSTRACT A cover structure for apparatuses that generate noise, [52] US. Cl. 181/198; l8l/33 K such as vibrators, with the cover consisting of an p 51 Int. c1. A47B 81/06 bottom, f metallic structure having a [58] Field of Search 181/ 198, 33 K flcctcd air fl discharge chute along an elevated edge formed in part by a removable top and side wall [56] References Cit d member, with the cover being fully insulated against UNITED STATES PATENTS noise and providing adjustable leg members for at- 2,701,618 2/1955 Montgomery 181/33 K UX tachmem to Supports 3,789,954 2/1974 Raleigh 181/33 K 8 Claims, 4 Drawing Figures U.S. Patent Dec. 30, 1975 5 V E 4 u 1 w VENTILATED ACOUSTI CAL COVER SUMMARY OF THE INVENTION A ventilated acoustical cover for a noise-generating device, such as a vibrator. The cover consists of an outer metallic, three-sided shell, the inner wall surfaces of which support a noise-suppressing insulating mat, such as that disclosed in U.S. Pat. No. 3,879,910 (Ser. No. 286,897). A top and side wall member is removably mounted on the shell to form a complete, openbottom housing.

One side wall of the shell, as well as one top edge of the wall, provides a deflected air chute therein, to deflect air through the housing and about the noisegenerating apparatus contained therein.

The cover is equipped with supporting legs having vertically adjustable connection so that the open bottom of the cover may be positioned relative to a supporting structure and thereby permitting the proper amount of air flow through the cover without distracting from its noise-suppressing function.

GENERAL DESCRIPTION The invention will be best understood by reference to the accompanying drawings showing the preferred form of construction, and in which:

FIG. 1 is a perspective view of the cover with the removable section separated therefrom;

FIG. 2 is a side elevational view of the cover showing a fragmentary portion in detail;

FIG. 3 is a detailed sectional view taken on line 33 of FIG. 2; and

FIG. 4 is an enlarged fragmentary sectional view of one supporting leg and its mounting to the cover.

The object of this invention is to provide aventilated acoustical cover for noise-generating apparatuses. As an example, electrostatic precipitators are designed to collect particles on a series of electrostatic precipitating plates, and as these particles adhere to the plates, they collect and build up and require periodic removal. To clear such particles from the plates, the plates are vibrated by either electrical or mechanical means, generating a considerable amount of noise which is objectionable. The purpose of this cover is to deaden such generated noise and protect the environment from noise pollution. The precipitators also generally operate at elevated temperatures, and therefore there is a heat dissipation problem. This problem is overcome by the cover of the invention, which is shown as providing an open bottom and a vented top, allowing a predetermined amount of air to flow through the cover to maintain a workable temperature in the vibrator area. As most of these devices are external of a building, it is required that the cover be provided with supporting legs which are readily adaptable to varying slopes and uneven configurations.

The cover of this invention consists of a three-sided shell composed of an end wall 11 and two spaced parallelly disposed

side walls

12 and 13. The top edge portion 14 of the end wall 11 is separated from the adjacent upstanding edge portions 15 and 16 of the

side walls

12 and 13 and folded along the line 17 inwardly of the shell 10, as seen in FIG. 3, for a purpose hereinafter described.

The cover includes a removable section 18 which consists of a top wall 19 and an end wall 20. The opposite side edges of the top wall 19 are formed to provide

sheet metal joints

21 and 22 that are adapted to receive the upstanding edge portions Hand 16 of the

side walls

12 and 13, when the top wall 19 is placed upon the shell 10, as seen in FIG. 2. The opposite side edges of the end wall 20 are likewise formed to provide sheet metal joints 23 for the reception of the elongated edges 24 of the

side walls

12 and 13 of the shell 10.

All of the sheet metal joints 2], 22 and 23 of the top wall 19 and end wall 20, as well as the

edges

15, 16 and 24 of the

side walls

12 and 13, are provided with aligned apertures 25 through which suitable connectors 26, in the form of wing nuts and bolts, project for removably connecting the section 18 to the shell 10.

The top wall 19 of section 18 provides an angular lip 27, which projects downwardly therefrom and beyond the plane of the end wall 11, as seen in FIG. 3.

Connected to the underside of the lip 27 below the bent line 28, between the lip 27 and the top wall 19, is a channel-forming member 29. This member 29 extends in a plane parallel to the inwardly bent edge portion 19 of the end wall 11 of the shell 10 and is spaced therefrom so as to form therebetween an air chute 30. The inner wall surfaces of the end wall 11 and

side walls

12 and 13 of the shell 10, as well as the inner wall surfaces of the top wall 19 and end wall 20 of the removable section 18 each support a batt of noisedeadening insulation 31. 7

As viewed in FIG. 4, the batt 31 consists of an outer aluminum sheet 32, two layers 33 and 34 of fibrous material, such as mineral wool, separated by a lead foil sheet 35. The exposed face of the butt 31 provides a second noise-deadening lead foil sheet 36 held together by a wire mesh 37.

As more clearly shown in FIG. 4, the end wall 11 and

side walls

12 and 13 of the shell 10 provide adjacent the bottom edges thereof an interior U-shaped bracket 38, one arm of which is fastened to the inner wall faces of such walls by means of welding or the like, with the bight portion 39 of the bracket forming a lower base support for the batt 31, and the opposite arm 40 embracing the inner lower edge portion of the batt 31 so as to secure the same within the shell 10.

This insulating noise-deadening batt 31 is of the type shown and described in US. Pat. No. 3,879,910 (Ser. No. 286,897) and, as such, makes up no part of the present invention except for its functional use with the structure hereinbefore described.

Adjacent to the bottom edge of each of the

side walls

12 and 13,-there is a reinforcing metallic plate 41 which provides laterally projecting threaded studs 42. These studs 42 are adapted to project through slots 43 formed in the upstanding leg portion 44 of generally L-shaped leg members 45. The leg members 45 provide a laterally extending base portion 46 which is adapted to have facial confrontation with any suitable supporting structure.

By this arrangement, the cover may be positioned in a raised relation with respect to a support structure a distance equal to the length of the slots 43 formed in the leg members 45. Adapted to be threaded upon the studs 42 are suitable bolts 47, which, when tightened upon the studs 42, will hold the cover in its desired elevated position.

By providing for a readily removable section 18, the apparatus which is to be contained within the ventilated acoustical cover may be readily serviced and the cover easily and quickly returned to its functional state.

While I have illustrated and described the preferred form of construction for carrying my invention into effect, this is capable of variation and modification without departingfrom' the spirit of the invention. 1, therefore, do not wish to be limited-to the precise details of construction set forth, but desire to avail myself of such variations and modifications as come within the scope of the appended claims.

Having thus described my invention, what I claim as new and desire to protect by Letters Patent is:

l. A ventilated acoustical cover for a noise-generating apparatus comprising a. a metallic three-sided shell,

b. a removable section providing a top and end wall cooperating with said shell to form an open bottom cover,

0. means for removably connecting said section to said shell,

d. means within said cover for acoustically and thermally insulating the same,

e. means provided by said top wall of said section and one wall of said shell cooperating to provide an air chute having open communication with the interior of said cover,

f. and means for supporting said cover with its open I bottom in a raised position whereby an air flow therethrough and out of said chute is maintained.

2. A ventilated acoustical cover for a noise-generating apparatus as defined by claim 1 and further including means provided by said shell and said one end wall of said section for supporting said acoustical and thermal insulating means within said cover.

3. A ventilated acoustical cover for a noise-generating apparatus as defined by 7 claim 1, wherein said means for removably connecting said section to said shell comprises channel members provided by opposite side edges of said top and end wall of said section for receiving the corresponding edges of certain sides of said shell for removably connecting said section to said shell.

4. A ventilated acoustical cover for a noise-generating apparatus as defined by claim 3, wherein there is included means provided by said shell and said one wall of said section for supporting said acoustical and thermal insulating means within said cover.

5. A ventilated acoustical cover for a noise-generating apparatus as defined by claim 1, wherein said means for supporting said cover comprises leg members providing vertically extending slots therein and connectors carried by certain walls of said shell disposed in said slots so that said cover may be supported thereby in various elevations.

6. A ventilated acoustical cover for a noise-generating apparatus as defined by claim 5 and further including means provided by said shell and said one end wall of said section for supporting said acoustical and thermal insulating means within said cover.

7. A ventilated acoustical cover for a noise-generating apparatus as defined by claim 5, wherein said means for removably connecting said section to said shell comprises channel members provided by opposite side edges of said top and end wall of said section for receiving the corresponding edges of certain sides of said shell for removably connecting said section to said shell.

8. A ventilated acoustical cover for a noise-generating apparatus as defined by claim 4, wherein said means for supporting said cover comprises leg members providing vertically extending slots therein and connectors carried by certain walls of said shell disposed in said slots so that said cover may be supported thereby in various elevations.

Claims

1. A ventilated acoustical cover for a noise-generating apparatus comprising a. a metallic three-sided shell, b. a removable section providing a top and end wall cooperating with said shell to form an open bottom cover, c. means for removably connecting said section to said shell, d. means within said cover for acoustically and thermally insulating the same, e. means provided by said top wall of said section and one wall of said shell cooperating to provide an air chute having open communication with the interior of said cover, f. and means for supporting said cover with its open bottom in a raised position whereby an air flow therethrough and out of said chute is maintained.

3. A ventilated acoustical cover for a noise-generating apparatus as defined by claim 1, wherein said means for removably connecting said section to said shell comprises channel members provided by opposite side edges of said top and end wall of said section for receiving the corresponding edges of certain sides of said shell for removably connecting said section to said shell.